Repositório do Conhecimento Institucional do Centro Universitário FEI
 

Engenharia de Materiais

URI permanente desta comunidadehttps://repositorio.fei.edu.br/handle/FEI/17

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20151

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Autor: search.filters.author.De Melo E.B.Periódico: search.filters.ispartof.Corrosion

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    Artigo 8 Citação(ões) na Scopus
    Evaluation of microstructural effects on the degree of sensitization (DOS) of a UNS S31803 duplex stainless steel aged at 475°C
    (2015) De Melo E.B.; Magnabosco R.
    © 2015, NACE International.In this study, microstructural and electrochemical behavior of a UNS S31803 duplex stainless steel aged at 475°C were investigated. Hardness values increased with aging at 475°C and evidence of alpha prime (α′) phase formation was confirmed by transmission electron microscopy analysis. Double loop electrochemical potentiokinetic reactivation measurements in a 2 M H2SO4 + 0.5 M NaCl + 0.01 M KSCN solution showed an increase in the degree of sensitization values, mainly for the sample aged for 360 h at 475°C. Moreover, the results suggest that α′ phase formation occurred via spinodal decomposition mechanism.